Conformal bootstrap analysis for the Yang-Lee edge singularity

The Yang-Lee edge singularity is investigated by the determinant method of the conformal field theory. $3\times 3$ minors are used for the evaluation of the scale dimension. The agreement with the Padé of $ϵ$ expansion in the region $3<D<6$ is improved. The critical dimension $D_c$, where the scale dimension of scalar ${\Delta }_{\varphi }$ is vanishing, is used for the improvement of the Padé. For the understanding of the intersection point of zero loci of $3\times 3$ minors, $2\times 2$ minors are investigated in detail; these are connected through Plüker relations.